Outside plant data communication systems

ABSTRACT

A data communication system for deploying outside plant fiber optics includes a cassette releasably engageable in a tray pivotably connectable to a tray fastening member disposed in an inside of an enclosure. A test port in the cassette is accessible without pivoting the tray and without pivoting any one or more trays pivotably connected to the tray fastening member.

BACKGROUND

An important consideration in data communication equipment is circuitdensity. Most fiber optic splice closures have limited space. Therefore,there is a need to reduce the size of data communication equipment andinstall as much data communication equipment as possible in a relativelysmall space in fiber optic splice closures.

For data communication manufacturers, making high density trays can be achallenging process in which engineers develop trays to meet the highdensity needs of the fiber optic splice closures while protectingoptical fiber lines, maintaining bend radii of the optical fiber lines,and managing massive amounts of the optical fiber lines. This isparticularly true for optical fiber lines, where the engineers createtrays having a high density of optical fibers.

Another important consideration in data communication equipment istesting of filters (e.g., wavelength management filters, coarsewavelength division multiplexing (CWDM) filters, dense wavelengthdivision multiplexing (DWDM) filters, etc.) and/or testing filters tomaintain and/or troubleshoot wavelengths of multiple colors on a singlefiber. Existing fiber optic splice closures can require accessing a trayto gain access to connectors connecting the fiber optic lines disposedin the tray. For example, existing fiber optic closures can requiredisplacing one or more trays of a plurality of trays to gain access to aparticular tray to be tested. After gaining access to the particulartray to be tested, optical fibers, filters, connectors, etc. may bedisplaced to gain access to a connector to test a filter. Subsequent totesting the filter, the optical fibers, filters, connectors, etc. aredisposed back into the particular tray, and all of the trays aredisplaced back into to a stowed position. Because testing a filter canrequire accessing a particular tray to gain access to connectorsdisposed in the particular tray, this increases an amount of work totest a filter, thereby reducing margins by increasing the cost ofinstalling, upgrading, and/or troubleshooting data communicationequipment. Moreover, because the fiber optic splice closures may be usedin an outside plant environment (e.g., in overhead lines, in overheadcable lines, in underground enclosures, in handholes, etc.), testing offilters can occur in adverse conditions. Because testing a filter canoccur in adverse conditions, this increases an amount of difficulty intesting filters, thus further increasing the amount of work to test thefilter, thereby further reducing margins by further increasing the costof installing, upgrading, and/or troubleshooting data communicationequipment. Therefore, there is a desire to maximize margins bydecreasing a cost of installing, upgrading, and/or troubleshooting datacommunication equipment by making them easily field testable.

SUMMARY

Data communication systems are described which are configured fordeploying outside plant fiber optics associated with a switch (e.g., ademultiplexer (DEMUX)). This summary is provided to introduce simplifiedconcepts of data communication systems, which are further describedbelow in the Detailed Description. This summary is not intended toidentify essential features of the claimed subject matter, nor is itintended for use in determining the scope of the claimed subject matter.

In an embodiment, a data communication system includes a tray pivotablyconnectable to a tray fastening member disposed in an inside of anenclosure. The enclosure may include one or more trays pivotablyconnected to the tray fastening member. A cassette may be releasablyengaged in the tray. The cassette may include a first connectorfastening station arranged in a first end of the cassette and the firstconnector fastening station may include a first plurality of receptaclesfastening a plurality of optical fiber interfaces. The cassette mayinclude a second connector fastening station arranged in a second end ofthe cassette and the second connector fastening station may include asecond plurality of receptacles fastening at least one test port. Theconfiguration of the cassette having the test port arranged in thesecond end of the cassette and the tray pivotably connected to the trayfastening member may provide for an engineer to applying a test signalto the test port of to test a filter disposed in the cassette withoutpivoting the tray or any of the one or more trays pivotably connected tothe tray fastening member, and without accessing (e.g., opening) thecassette.

In another embodiment, a data communication system includes an enclosureincluding a tray fastening member disposed in an inside of theenclosure. The tray includes a connecting member disposed at a first endof the tray for pivotably connecting to the tray fastening member, afirst locking mechanism on a first side of the tray, and a secondlocking mechanism on the second side of the tray. A cassette may bereleasably engaged in the tray. The cassette includes a first lockingmechanism on a first side of the cassette and a second locking mechanismon a second side of the cassette. The first locking mechanism on thefirst side of the tray may be releasably engageable with the firstlocking mechanism on the first side of the cassette, and the secondlocking mechanism on the second side of the tray may be releasablyengageable with the second locking mechanism on the second side of thecassette. Because the cassette may be releasably engaged in the tray,the cassette is quickly and easily replaceable. Moreover, because thecassette may be releasably engaged in the tray, the cassette ispositively engaged in the tray in a correct orientation relative to theenclosure.

In another embodiment, a data communication system includes a traypivotably connectable to a tray fastening member disposed in an insideof an enclosure. A height of the tray may range from about 0.4 inches toabout 0.6 inches. A cassette may be releasably engageable in the tray. Aheight of the cassette may range from about 0.4 inches to about 0.6inches. Because the height of the cassette is about the same as theheight of the tray, the releasably engaged cassette and tray assemblymay be disposed in a space designated for a standard tray (e.g., a spacedesignated for a standard splice tray of a fiber optic splice closure(FOSC)).

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description is set forth with reference to the accompanyingfigures. In the figures, the left-most digit(s) of a reference numberidentifies the figure in which the reference number first appears. Theuse of the same reference numbers in different figures indicates similaror identical items.

FIG. 1 illustrates an example outside plant data communication systemaccording to an embodiment of this disclosure.

FIG. 2 illustrates an example data communication system useable in theoutside plant data communication system illustrated in FIG. 1 accordingto an embodiment of this disclosure.

FIG. 3 illustrates an exploded assembly view of the data communicationsystem illustrated in FIG. 2 according to an embodiment of thisdisclosure.

FIG. 4 illustrates an example assembled view of the data communicationsystem illustrated in FIG. 3 according to an embodiment of thisdisclosure.

FIG. 5 illustrates another example assembled view of the datacommunication system illustrated in FIG. 3 according to an embodiment ofthis disclosure.

FIG. 6 illustrates another example assembled view of the datacommunication system illustrated in FIG. 3 according to an embodiment ofthis disclosure.

DETAILED DESCRIPTION

Overview

This disclosure is directed to data communication systems having acassette and a tray. The cassette may be releasably engageable in thetray. The tray is pivotably connectable to a tray fastening memberdisposed in an inside of an enclosure (e.g., closure, fiber optic spliceclosure (FOSC), etc.) and the cassette includes a plurality of testports to allow for testing filters (e.g., wavelength management filters,coarse wavelength division multiplexing (CWDM) filters, dense wavelengthdivision multiplexing (DWDM) filters, etc.) in the cassette withoutpivoting any trays pivotably connected to the tray fastening member andwithout accessing (e.g., opening) the cassette. While the disclosuredescribes “a” or “the” data communication system, the article (e.g.,“a,” “an,” or “the”) used preceding “data communication system” is notintended to indicate a limitation of the features of the system itself,unless otherwise so stated. Indeed, multiple embodiments of a datacommunication system may be possible by using one or more of the variousfeatures and concepts in varying implementations and/or combinations.For example, while the figures may depict an embodiment of a datacommunication system disposed in an outside plant enclosure associatedwith a demultiplexer (DEMUX), it is contemplated that one or morefeatures and concepts described herein as related to the datacommunication system may be implemented in other embodiments, such as,for example, an embodiment of the features for testing filters in aninside plant environment and/or an embodiment of the features fortesting filters associated with a multiplexer (MUX). Moreover, while thedisclosure describes the data communication system configured to testfilters, the data communication system may be configured for any fiberconnectivity and/or fiber management (e.g., splitting wavelength,splitting power, splicing, patching, test ports, patch ports, etc.), forexample.

A data communication system as disclosed herein may include a traypivotably connectable to a tray fastening member (e.g., tray tower)disposed in an inside of an enclosure. The enclosure may include one ormore trays (e.g., one or more splice trays) pivotably connected to thetray fastening member. A cassette may be releasably engaged in the tray.The cassette may include a plurality of optical fiber interfacesfastened in a plurality of receptacles of a first connector fasteningstation arranged in a first end of the cassette. The cassette mayinclude a plurality of test ports fastened in a plurality of receptaclesof a second connector fastening station arranged in a second end of thecassette. The plurality of test ports are accessible to test filters inthe tray without pivoting the tray, without pivoting any of the one ormore trays, or accessing the cassette.

A data communication system as disclosed herein may include a trayincluding a connecting member disposed at a first end of the tray forpivotably connecting to a tray fastening member of an enclosure. Thetray may include a first locking mechanism on a first side of the trayand a second locking mechanism on a second side of the tray. A cassettereleasably engaged in the tray may include a first locking mechanism ona first side of the cassette and a second locking mechanism on a secondside of the cassette. The first locking mechanism of tray is releasablyengageable with the first locking mechanism of the cassette, and thesecond locking mechanism of the tray is releasably engageable with thesecond locking mechanism of the cassette to positively engage thecassette in the tray in a correct orientation relative to the enclosure.

A data communication system as disclosed herein may include a trayhaving a height ranging from about 0.4 inches to about 0.6 inches. Acassette releasably engageable in the tray may have about the sameheight as the tray ranging from about 0.4 inches to about 0.6 inches.The cassette may be modular and configured for a particular type ofenclosure. The cassette may positively engage in the tray whichpivotably connects to a tray fastening member disposed in the particulartype of enclosure.

Illustrative Embodiments of Data Communication Systems

FIG. 1 illustrates an example outside plant data communication system100 according to an embodiment of this disclosure. The outside plantdata communication system 100 may be used in overhead lines, in overheadcable lines, in underground enclosures, in handholes, etc. and may beassociated with a demultiplexer (DEMUX). The outside plant datacommunication system 100 may include fiber optic components. Forexample, the outside plant data communication system 100 may include anenclosure 102A and 102B, a tray fastening member 104, and one or moretrays 106. The enclosure 102A and 102B may be a closure, a fiber opticsplice closure (FOSC), an “A” series FOSC, a “B” series FOSC, a “C”series FOSC, a “D” series FOSC, etc. The tray fastening member 104 maybe a tower, a tray tower, etc. disposed in an inside of the enclosure102B. The one or more trays 106 may be splice trays, patch trays, powertrays, etc. pivotably connected to the tray fastening member 104. Thefiber optic components may include a data communication system 108. Thedata communication system 108 may include a tray 110 pivotablyconnectable (represented by double arrowed line “A”) to the trayfastening member 104 disposed in the inside of the enclosure 102B. Thedata communication system 108 may include a cassette 112 releasablyengaged in the tray 110. The cassette may include a plurality of testports 114 to allow for testing filters (e.g., wavelength managementfilters, coarse wavelength division multiplexing (CWDM) filters, densewavelength division multiplexing (DWDM) filters, etc.) (shown in FIG. 6)in the cassette 112 without pivoting any of the one or more trays 106 orpivoting the tray 110 and without accessing (e.g., opening) the cassette112.

FIG. 2 illustrates an example data communication system 200 useable inthe outside plant data communication system 100 illustrated in FIG. 1according to an embodiment of this disclosure. The data communicationsystem 200 may be the same as the data communication system 108.Inasmuch as FIG. 2 depicts the data communication system 200, whilereferring to the same elements and features of the data communicationsystem 108, the following discussion of specific features may referinterchangeably to any of FIGS. 1-2 except where explicitly indicated.In particular, FIG. 2 illustrates an embodiment of the datacommunication system 200, including the tray 110, the cassette 112, andthe plurality of test ports 114.

FIG. 2 illustrates the data communication system 200 may include aplurality of optical fiber interfaces 202. The plurality of opticalfiber interfaces 202 may be fastened in a first plurality of receptaclesof a first connector fastening station (described in more detail belowwith regard to FIGS. 3-5). Each optical fiber interface of the pluralityof optical fiber interfaces 202 may be sized to receive a respectivebundle of optical fibers 204. For example, a respective bundle ofoptical fibers 204 may include multiple individual fibers contained in ajacket as a bundle of optical fibers, and each optical fiber interfaceof the plurality of optical fiber interfaces 202 may be sized to receivethe jacketed bundle of optical fibers. In another example, a respectivebundle of optical fibers 204 may include multiple individual fibers, notcontained in a jacket, and each optical fiber interface of the pluralityof optical fiber interfaces 202 may be sized to receive the multipleindividual fibers that are not contained in a jacket. The respectivebundle of optical fibers 204 may include a quantity of about two cablesof fibers. Each cable may have a diameter of about 0.1225 inches (3 mm).The respective bundle of optical fibers 204 may have a size of at leastabout 0.12 inches (3 mm) to at most about 0.24 inches (6 mm). Eachoptical fiber interface of the plurality of optical fiber interfaces 202may have one cable to at most about two cables exiting an optical fiberinterface. Thus, each optical fiber interface of the plurality ofoptical fiber interfaces 202 may have a size of at least about 0.12inches to at most about 0.24 inches to receive a bundle of opticalfibers. Each optical fiber interface of the plurality of optical fiberinterfaces 202 may provide strain relief for each bundle of opticalfibers 204 received by each optical fiber interface. This can providefor protecting the optical fibers received by the cassette 112 and/orprovide for managing the plurality of optical fibers received by thecassette 112. For example, because each fiber interface of the pluralityof optical fiber interfaces 202 may receive a respective bundle ofoptical fibers 204 this may provide for maintaining bend radii of theoptical fibers in the respective bundle of optical fibers 204 andprovide for managing the optical fibers in the respective bundle ofoptical fibers 204 with respect to individual channels.

The tray 110 may include a connecting member 206 disposed on a first end208 of the tray 110. The connecting member 206 may be attachable to ahinge member 210 for pivotably connecting to the tray fastening member104 disposed in the inside of the enclosure 102B. The hinge member 210may be a first hinge member different than a second hinge member. Forexample, the enclosure 102A and 102B may be a first type of enclosure(e.g., “B” series fiber optic splice closure (FOSC)) having a lower trayhousing capacity (e.g., about four trays (e.g., splice trays)) than asecond type of enclosure (e.g., “D” series fiber optic splice closure(FOSC)) having a higher tray housing capacity (e.g., about six trays(e.g., splice trays)) than the first type of enclosure. The trayfastening member 104 may be a first tray fastening member disposed inthe inside of the first type of enclosure smaller than a second trayfastening member disposed in an inside of the second type of enclosure.And, the first hinge member attaches to the connecting member 206 of thetray 110 for pivotably connecting to the first tray fastening member ofthe first type of enclosure, and the second hinge member attaches to theconnecting member 206 of the tray 110 for pivotably connecting to thesecond tray fastening member of the second type of enclosure. In thisway, the tray 110 may be attached (e.g., snap fit, press fit,interference fit, etc.) into enclosures having different housingcapacities as desired. For example, an engineer may attach the firsthinge member to the connecting member 206 of the tray 110 to pivotablyattach the tray 110 to a “B” series fiber optic splice closure (FOSC) asdesired, or an engineer may attach the second hinge member to theconnecting member 206 of the tray 110 to pivotably attach the tray 110to a “D” series fiber optic splice closure (FOSC) as desired.

The cassette 112 may include a cover 212. The cover 212 may beremoveably attached to a top of the cassette 112. The cover 212 mayenclose the cassette 112 and/or cover fiber optic components in thecassette 112.

FIG. 3 illustrates an exploded assembly view 300 of the datacommunication system 200 illustrated in FIG. 2 according to anembodiment of this disclosure (for clarity the plurality of test ports114, the plurality of optical fiber interfaces 202, the respectivebundles of optical fiber 204, and the cover 212 are not shown). FIG. 3illustrates the tray 110 detached from the cassette 112.

The tray 110 may have a second end 302 opposite the first end 208, afirst side 304(A) arranged between the first end 208 of the tray 110 andthe second end 302 of the tray 110, and a second side 304(B) arrangedbetween the first end 208 of the tray 110 and the second end 302 of thetray 110. A first locking mechanism 306(A) may be disposed on the firstside 304(A) of the tray 110, and a second locking mechanism 306(B)(illustrated in FIGS. 4-5) may be disposed on the second side 304(B) ofthe tray 110. The first locking mechanism 306(A) and/or the secondlocking mechanism 306(B) may be detents. For example, the detents may bean opening, a hole, a pocket, an aperture, a groove, a recess, etc. Inanother example, the detents may be a protrusion, a bump, a nodule, aridge, etc.

The cassette 112 may have a first end 308 opposite a second end 310, afirst side 312(A) arranged between the first end 308 of the cassette 112and the second end 310 of the cassette 112, and a second side 312(B)arranged between the first end 308 of the cassette 112 and the secondend 310 of the cassette 112. The first end 308 of the cassette 112 mayhave a first geometry symmetrical, about at least one axis, to a secondgeometry of the second end 310 of the cassette 112. For example, thefirst geometry may have a shape and relative arrangement of fasteningfeatures, structures, members, receptacles, etc. that are substantiallythe same as a shape and relative arrangement of fastening features,structures, members, receptacles, etc. of the second geometry. Further,the shapes and relative arrangements of fastening features, structures,members, receptacles, etc. of both of the first geometry and the secondgeometry may be symmetrically arranged, about an X-axis, a Y-axis,and/or a Z-axis of the cassette. For example, the first geometry mayhave a length, a width, a height, and a plurality of receptacles thatare substantially the same as a length, a width, a height and aplurality of receptacles of the second geometry that may besymmetrically arranged about an X-axis, a Y-axis, and/or a Z-axis of thecassette. (See for example, PCT Application No. PCT/US17/60406, filedNov. 7, 2017, entitled “Configurable Fiber Cassette,” which is herebyincorporated by reference in its entirety.) The symmetry of the cassette112 allows for the use of both of the first end 308 and the second end310 of the cassette 112 and configure the cassette 112 based at least inpart on a type of an outside plant data communication system.

A first locking mechanism 314(A) may be disposed on the first side312(A) of the cassette 112, and a second locking mechanism 314(B) may bedisposed on the second side 312(B) of the cassette 112. The firstlocking mechanism 306(A) on the first side 304(A) of the tray 110 may bereleasably engageable (e.g., snap fit, press fit, interference fit,etc.) with the first locking mechanism 314(A) on the first side 312(A)of the cassette 112, and the second locking mechanism 306(B) on thesecond side 304(B) of the tray 110 may be releasably engageable (e.g.,snap fit, press fit, interference fit, etc.) with the second lockingmechanism 314(B) on the second side 312(B) of the cassette 112. Thefirst locking mechanism 314(A) and/or the second locking mechanism314(B) may be detents. For example, the detents may be a protrusion, abump, a nodule, a ridge, etc. In another example, the detents may be anopening, a hole, a pocket, an aperture, a groove, a recess, etc.

While FIG. 3 illustrates the first locking mechanism 314(A) is a singleunit of material fastened on the first side 312(A) of the cassette 112and the second locking mechanism 314(B) is a single unit of materialfastened on the second side 312(B) of the cassette 112, the firstlocking mechanism 314(A) and/or the second locking mechanism 314(B) maynot be a single unit of material fastened on the first and second sides312(A) and 312(B) of the cassette 112. For example, the first lockingmechanism 314(A) and/or the second locking mechanism 314(B) may beformed integrally with the first and second sides 304(A) and/or 304(B)of the cassette 112.

A first connector fastening station 316(A) may be arranged in the firstend 308(A) of the cassette 112. A second connector fastening station316(B) may be arranged in the second end 310 of the cassette 112. Thefirst connector fastening station 316(A) may include a first pluralityof receptacles 318, each of the first plurality of receptacles 318 beingconfigured to fasten at least one of a first connector, a first adapter,a first plug, or a first strain relief unit. The second connectorfastening station 316(B) may include a second plurality of receptacles320, each of the second plurality of receptacles 320 being configured tofasten at least one of a second connector, a second adapter, a secondplug, or a second strain relief unit. Because the first and secondconnector fastening stations 316(A) and 316(B) in the cassette 112 maybe populated with any one of a plurality of optical fiber interfaces(e.g., connectors, adapters, plugs, strain relief units, etc.) thecassette 112 may be modular in that the cassette 112 is easilyconfigured based at least in part on a particular type of outside plantdata communication system the cassette 112 is to be installed in bysimply populating the first and second connector fastening stations316(A) and 316(B) with a desired set of optical fiber interfaces thatcorrelates to the particular type of outside plant data communicationsystem.

The tray 110 may have a height 322 ranging from about 0.4 inches toabout 0.6 inches. The cassette 112 may have a height 324 ranging fromabout 0.4 inches to about 0.6 inches. Because the height 324 of thecassette 112 is about the same as the height 322 of the tray 110, thereleasably engaged cassette 112 and tray 110 assembly may be disposed ina space designated for a standard tray (e.g., a space designated for astandard splice tray of a fiber optic splice closure (FOSC)). Forexample, a total height of the cassette 112 releasably engaged in thetray 110 may be about the same as a height of a standard splice traythat is configured to be disposed in a fiber optic splice closure(FOSC). Because the total height of the cassette 112 releasably engagedin the tray 110 may be about the same as a height of a standard splicetray, the releasably engaged cassette 112 and tray 110 assembly may bedisposed in the space designated for the standard splice tray in thefiber optic splice closure (FOSC). Because the releasably engagedcassette 112 and tray 110 assembly may be disposed in the spacedesignated for the standard splice tray in the fiber optic spliceclosure (FOSC), the releasably engaged cassette 112 and tray 110assembly allows for retrofitting an existing fiber optic splice closure(FOSC). For example, the releasably engaged cassette 112 and tray 110assembly may be disposed in the space designated for the standard splicetray in the fiber optic splice closure (FOSC) to retrofit an existingfiber optic splice closure (FOSC) to include more sophisticated filters(e.g., wavelength management filters, coarse wavelength divisionmultiplexing (CWDM) filters, dense wavelength division multiplexing(DWDM) filters, etc.) in an existing outside plant data communicationsystem.

FIG. 4 illustrates an example assembled view 400 of the datacommunication system 200 illustrated in FIG. 3 according to anembodiment of this disclosure. FIG. 4 illustrates the tray 110releasably engaged with the cassette 112. For example, the first lockingmechanism 306(A) on the first side 304(A) of the tray 110 is releasablyengaged with the first locking mechanism 314(A) on the first side 312(A)of the cassette 112, and the second locking mechanism 306(B) on thesecond side 304(B) of the tray 110 is releasably engageable with thesecond locking mechanism 314(B) on the second side 312(B) of thecassette 112. Because the cassette 112 is releasably engaged in the tray110, the cassette 112 is positively engaged in the tray 110 in a correctorientation relative to the first end 208 of the tray 110, and the firstend 208 of the tray 110 pivotably connects, via the connecting member206 and the hinge member 210, to the tray fastening member 104 disposedin the inside of the enclosure 102B. Because the cassette 112 ispositively engaged in the tray 110 in a correct orientation relative tothe first end 208 of the tray 110, when an engineer proceeds to installthe positively engaged cassette 112 and tray 110 assembly in overheadlines, in overhead cable lines, in underground enclosures, in handholes,etc., the positively engaged cassette 112 and tray 110 assembly ensuresthe correct orientation during installation in the field. Further,because the cassette 112 is releasably engaged in the tray 110, thecassette 112 is quickly and easily replaceable. Moreover, because thehinge member 210 on the first end 208 of the tray 110 is attached (e.g.,snap fit, press fit, interference fit, etc.) to the tray fasteningmember 104 disposed in the inside of the enclosure 102B, the positivelyengaged cassette 112 and tray 110 assembly may be quickly and easilyreplaceable. Still further, because the cassette 112 is positivelyengaged in tray 110 the positively engaged cassette 112 and tray 110assembly is more robust and more capable of enduring harsh environmentalconditions, as well as being more capable of being mounted in differentorientations than existing trays using hook-and-loop fasteners, adhesivefasteners, adhesive tape fasteners, etc.

FIG. 5 illustrates another example assembled view 500 of the datacommunication system 200 illustrated in FIG. 3 according to anembodiment of this disclosure. FIG. 5 illustrates the tray 110releasably engaged with the cassette 112, the first plurality ofreceptacles 318 fastening the plurality of optical fiber interfaces 202,and the second plurality of receptacles 320 fastening the plurality oftest ports 114.

The plurality of optical fiber interfaces 202 may include a plurality ofstrain relief passthroughs. The plurality of test ports 114 may includea plurality of LC connectors. The LC connectors may be pre-terminated LCconnectors. For example, the LC connectors may be pre-terminated at atime of manufacturing the cassette 112 at a facility. While FIG. 5illustrates the plurality of optical connectors including a plurality ofLC connectors, the plurality of connectors may include a plurality ofother connectors. For example, the plurality of connectors may be SCconnectors. The SC connectors may be pre-terminated SC connectors. Forexample, the SC connectors may be pre-terminated at a time ofmanufacturing the cassette 112 at a facility. The plurality of testports 114 may include a plurality of course wavelength divisionmultiplexing (CWDM) test ports. While FIG. 5 illustrates the pluralityof test ports 114 may include a plurality of course wavelength divisionmultiplexing (CWDM) test ports, other test ports are contemplated. Forexample, the plurality of test ports 114 may include a plurality ofdense wavelength division multiplexing (DWDM) test ports.

FIG. 6 illustrates another example assembled view 600 of the datacommunication system 200 illustrated in FIG. 3 according to anembodiment of this disclosure. FIG. 6 illustrates the tray 110releasably engaged with the cassette 112. FIG. 6 illustrates filters 602(e.g., wavelength management filters, coarse wavelength divisionmultiplexing (CWDM) filters, dense wavelength division multiplexing(DWDM) filters, etc.) disposed in the cassette 112. While FIG. 6illustrates two filters 602 disposed in the cassette 112, any number offilters 602 may be disposed in the cassette 112. For example, the numberof filters 602 disposed in the cassette 112 may vary depending on aconfiguration of the data communication system 200.

CONCLUSION

Although the invention has been described in language specific tostructural features and/or methodological acts, it is to be understoodthat the invention is not necessarily limited to the specific featuresor acts described. Rather, the specific features and acts are disclosedas illustrative forms of implementing the invention. For example, whileembodiments are described having certain shapes, sizes, andconfigurations, these shapes, sizes, and configurations are merelyillustrative.

What is claimed is:
 1. A data communication system for deploying outsideplant fiber optics, the data communication system comprising: a firsttray pivotably connectable to a tray fastening member disposed in aninside of an enclosure, the enclosure including one or more second trayspivotably connected to the tray fastening member; and a cassettereleasably engaged in the first tray, the cassette having a first endopposite a second end, the cassette including: a first connectorfastening station arranged in the first end of the cassette, the firstconnector fastening station including a first plurality of receptaclesto fasten, respectively, a plurality of optical fiber interfaces, and asecond connector fastening station arranged in the second end of thecassette, the second connector fastening station including a secondplurality of receptacles to fasten, respectively, a plurality of testports, wherein, when the first tray and the one or more second trays arepivotably connected to the tray fastening member, the plurality of testports are accessible without pivoting the first tray and withoutpivoting the one or more second trays pivotably connected to the trayfastening member.
 2. The data communication system of claim 1, whereineach optical fiber interface of the plurality of optical fiberinterfaces is sized to receive a respective bundle of optical fibers. 3.The data communication system of claim 1, wherein the first end of thecassette has a first geometry symmetrical, about at least one axis, to asecond geometry of the second end of the cassette.
 4. The datacommunication system of claim 1, wherein the first tray includes aconnecting member disposed on an end of the first tray, the connectingmember attachable to a hinge member for pivotably connecting to the trayfastening member disposed in the inside of the enclosure.
 5. A datacommunication system for deploying outside plant fiber optics, the datacommunication system comprising: an enclosure including a tray fasteningmember disposed in an inside of the enclosure; a tray having a first endopposite a second end, and a first side opposite a second side, thefirst side of the tray extending between the first end of the tray andthe second end of the tray, the second side of the tray extendingbetween the first end of the tray and the second end of the tray, andthe tray including: a connecting member disposed at the first end of thetray for pivotably connecting to the tray fastening member, a firstlocking mechanism on the first side of the tray, and a second lockingmechanism on the second side of the tray; a cassette releasably engagedin the tray, the cassette having a first end opposite a second end, anda first side opposite a second side, the first side of the cassetteextending between the first end of the cassette and the second end ofthe cassette, the second side extending between the first end of thecassette and the second end of the cassette, and the cassette including:a first locking mechanism on the first side of the cassette, a secondlocking mechanism on the second side of the cassette, a first connectorfastening station arranged in the first end of the cassette and thefirst connector fastening station including a first plurality ofreceptacles, each of the first plurality of receptacles being configuredto fasten at least one of a first connector, a first adapter, a firstplug, or a first strain relief unit, and a second connector fasteningstation arranged in the second end of the cassette and the secondconnector fastening station including a second plurality of receptacles,each of the second plurality of receptacles being configured to fastenat least one of a second connector, a second adapter, a second plug, ora second strain relief unit; and wherein the first locking mechanism onthe first side of the tray is releasably engageable with the firstlocking mechanism on the first side of the cassette, and the secondlocking mechanism on the second side of the tray is releasablyengageable with the second locking mechanism on the second side of thecassette.
 6. The data communication system of claim 5, furthercomprising a hinge member, wherein the connecting member of the trayattaches to the hinge member for pivotably connecting to the trayfastening member of the enclosure.
 7. The data communication system ofclaim 6, wherein the hinge member is a first hinge member, and whereinthe system further comprises a second hinge member, the first hingemember being different than the second hinge member, wherein theenclosure is a first type of enclosure, and wherein the system furthercomprises a second type of enclosure, the first type of enclosure havinga lower tray housing capacity than the second type of enclosure having ahigher tray housing capacity than the first type of enclosure, whereinthe tray fastening member is a first tray fastening member, and whereinthe system further comprises a second tray fastening member, the firsttray fastening member disposed in the inside of the first type ofenclosure smaller than the second tray fastening member disposed in aninside of the second type of enclosure, and wherein the first hingemember attaches to the connecting member of the tray for pivotablyconnecting to the first tray fastening member of the first type ofenclosure, and the second hinge member attaches to the connecting memberof the tray for pivotably connecting to the second tray fastening memberof the second type of enclosure.
 8. The data communication system ofclaim 5, wherein the first locking mechanism on the first side of thecassette is a single unit of material and is fastened on the first sideof the cassette, or wherein the second locking mechanism on the secondside of the cassette is a single unit of material and is fastened on thefirst side of the cassette.
 9. The data communication system of claim 5,wherein the first end of the cassette has a first geometry symmetrical,about at least one axis, to a second geometry of the second end of thecassette.
 10. A data communication system for deploying outside plantfiber optics, the data communication system comprising: a first type ofenclosure and a second type of enclosure, the first type of enclosurehaving a lower tray housing capacity than the second type of enclosurehaving a higher tray housing capacity than the first type of enclosure;a first tray fastening member disposed in an inside of the first type ofenclosure; a second tray fastening member disposed in an inside of thesecond type of enclosure, the first tray fastening member smaller thanthe second tray fastening member; a tray pivotably connectable to thefirst tray fastening member or to the second tray fastening member, aheight of the tray ranging from 0.4 inches to 0.6 inches, the trayhaving a first end opposite a second end, and the tray including: aconnecting member disposed at the first end of the tray, a first hingemember, wherein the connecting member attaches to the first hinge memberfor pivotably connecting to the first tray fastening member, and asecond hinge member different than the first hinge member, wherein theconnecting member attaches to the second hinge member for pivotablyconnecting to the second tray fastening member; and a cassettereleasably engageable in the tray, a height of the cassette ranging from0.4 inches to 0.6 inches.
 11. The data communication system of claim 10,wherein: the tray has a first side opposite a second side, the firstside of the tray extending between the first end of the tray and thesecond end of the tray, the second side of the tray extending betweenthe first end of the tray and the second end of the tray, and the trayincluding: a first locking mechanism on the first side of the tray, anda second locking mechanism on the second side of the tray; and thecassette has a first end opposite a second end, and a first sideopposite a second side, the first side of the cassette extending betweenthe first end of the cassette and the second end of the cassette, andthe second side extending between the first end of the cassette and thesecond end of the cassette, the cassette including: a first lockingmechanism on the first side of the cassette, and a second lockingmechanism on the second side of the cassette; and wherein the firstlocking mechanism on the first side of the tray is releasably engageablewith the first locking mechanism on the first side of the cassette andthe second locking mechanism on the second side of the tray isreleasably engageable with the second locking mechanism on the secondside of the cassette.
 12. The data communication system of claim 10,wherein the cassette has a first end opposite a second end, and whereinthe first end of the cassette has a first geometry symmetrical, about atleast one axis, to a second geometry of the second end of the cassette.13. The data communication system of claim 10, wherein the cassette hasa first end opposite a second end, and wherein the cassette furtherincludes: a first connector fastening station arranged in the first endof the cassette and the first connector fastening station including afirst plurality of receptacles, each of the first plurality ofreceptacles being configured to fasten at least one of a firstconnector, a first adapter, a first plug, or a first strain relief unit,and a second connector fastening station arranged in the second end ofthe cassette and the second connector fastening station including asecond plurality of receptacles, each of the second plurality ofreceptacles being configured to fasten at least one of a secondconnector, a second adapter, a second plug, or a second strain reliefunit.
 14. The data communication system of claim 10, wherein thecassette has a first end opposite a second end, and wherein the cassettefurther includes: a first connector fastening station arranged in thefirst end of the cassette and the first connector fastening stationincluding a first plurality of receptacles, the first plurality ofreceptacles fastening a plurality of optical fiber interfaces, and asecond connector fastening station arranged in the second end of thecassette and the second connector fastening station including a secondplurality of receptacles, the second plurality of receptacles fasteninga test port.
 15. The data communication system of claim 14, wherein thetest port includes an LC connector or an SC connector.
 16. The datacommunication system of claim 14, wherein the test port includes acoarse wavelength division multiplexing (CWDM) test port, or the testport includes a dense wavelength division multiplexing (DWDM) test port.17. The data communication system of claim 1, wherein the plurality oftest ports includes an LC connector.
 18. The data communication systemof claim 1, wherein the plurality of test ports includes an SCconnector.
 19. The data communication system of claim 1, wherein theplurality of test ports includes a coarse wavelength divisionmultiplexing (CWDM) test port.
 20. The data communication system ofclaim 1, wherein the plurality of test ports includes a dense wavelengthdivision multiplexing (DWDM) test port.